Question about 2003 GMC Envoy
Need to know whAt the spark plug gap is for a 03 envoy?
They come pre gapped with collars to prevent the electrodes from getting bent .platinum and iridium plugs will have the surface damaged if you were to adjust them with a feeler gauge,like old plugs had to be gapped. ac or ngk plugs come pre gapped in the box.
Posted on Aug 22, 2009
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Posted on Jan 02, 2017
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